A
03.04 Appendix
B Terms
Ó Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operator’s Guide HMI Advanced (BAD) – 03.04 Edition A-479
Data word
A data unit, two bytes in size, within a -> data block.
Deletion of distance-to-
go
Command in parts program which stops machining and clears the
remaining path distance to go.
Design
· The SINUMERIK FM-NC is installed in the CPU tier
of the SIMATIC S7-300. The 200mm wide, fully encapsulated
module has the same external design as the SIMATIC S7-300
modules.
· The SINUMERIK 840D is installed as a compact module in the
SIMODRIVE 611D converter system. It has the same dimensions
as a 50mm wide SIMODRIVE 611D module. The SINUMERIK
840D comprises the NCU module and the NCU box.
· The SINUMERIK 810D has the same design as the SIMODRIVE
611D with a width of 150mm. The following components are
integrated: SIMATIC S7-CPU, 5 digital servo drive controls and 3
SIMODRIVE 611D power modules.
Diagnosis
1. Control operating area
2. The control incorporates a self-diagnosis program and test routines
for servicing: Status, alarm and service displays.
Digital input/output
module
Digital modules are signal transducers for binary process signals.
Dimensions in metric
and inch systems
Position and lead/pitch values can be programmed in inches in the
machining program. The control is set to a basic system regardless of
the programmable unit of measure (G70/G71).
DRF
Differential Resolver Function NC function which generates an
incremental zero offset in AUTOMATIC mode in conjunction with an
electronic handwheel.
Drift compensation
When the CNC axes are in the constant motion phase, automatic drift
compensation is implemented in the analog speed control.
Drive
· SINUMERIK FM-NC has an analog +
10V interface to the
SIMODRIVE 611A converter system.
· The SINUMERIK 840D control system is linked to the SIMODRIVE
611D converter system via a high-speed digital parallel bus.
E
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